Duo Two-Factor Authentication
3,000+ active installs · Rated 3.7/5 · Updated June 6, 2025
A plugin connecting WordPress logins to the Duo Security service, so administrators or all users must approve sign-ins through a second factor such as a phone prompt. It suits organisations already using Duo or wanting managed authentication. The plugin is free, but it needs a Duo account, which has its own free and paid plans.
Pros
- Two-factor login by role, set in the plugin settings
- Uses the Duo Security service and its verification methods
- Free plugin with no paid edition in the code
Cons
- Needs a Duo account with integration and secret keys
- No firewall, lockout, malware scan or activity log
Topics: Security plugins
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